Analog Devices Inc./Maxim Integrated MAX6383LT16D1+

Overview

MAX6383LT16D1+ from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 1.58V reset threshold (±2.5% over −40°C to +125°C), 1ms minimum reset timeout, and guaranteed valid reset operation down to VCC = 1.0V. It monitors single supply voltage in battery-powered or space-constrained embedded systems requiring precise brownout detection.

For engineers reviewing the MAX6383LT16D1+ datasheet, MAX6383LT16D1+ pinout, MAX6383LT16D1+ application, or MAX6383LT16D1+ equivalent, key selection criteria include its 1.58V threshold accuracy, 1ms timeout timing, open-drain output compatibility with multi-voltage logic buses, ultra-low 3μA supply current at 1.8V, and SC70-3/μDFN-6 package options for high-density PCB layouts.

Technical Context

The MAX6383LT16D1+ implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across −40°C to +125°C and 60ppm/°C tempco, paired with a monolithic RC timer generating a guaranteed-minimum 1ms reset assertion period after VCC recovery. Its open-drain RESET output requires an external pullup and remains functional down to VCC = 1.0V, enabling reliable reset signaling during deep brownout conditions.

No manual reset (MR) input or auxiliary RESET IN comparator is integrated - this variant is optimized for minimal footprint and deterministic single-supply monitoring. It shares pin compatibility with legacy MAX809/MAX810 families but delivers tighter threshold tolerance and lower quiescent current than those predecessors.

Key Specifications

Pinout & Package

MAX6383LT16D1+ is available in both 3-pin SC70 (X3+2 outline) and 6-pin μDFN (L611+1 outline) packages. The SC70-3 variant uses all pins functionally; the μDFN-6 variant includes two no-connect (N.C.) pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Compared with MAX809LTRG+T and TPS3808G16DBVR, the MAX6383LT16D1+ offers the shortest standard timeout (1ms) and optimal balance of threshold precision, open-drain versatility, and ultra-low power - making it ideal for fast-booting, battery-critical, or multi-voltage embedded systems where timing and interface flexibility are primary constraints.

Availability

MAX6383LT16D1+ is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, portable medical sensors, smart energy meters, and battery-powered edge devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6383LT16D1+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and communications applications, emphasizing low power, high reliability, and robust performance across extreme temperatures.

The MAX6381–MAX6390 family was engineered specifically for low-voltage microprocessor supervision in space- and power-constrained systems, delivering factory-trimmed accuracy, nanoscale packaging, and guaranteed operation down to 1.0V supply - addressing core challenges in modern embedded power management.

FAQ

What is the exact reset threshold voltage of MAX6383LT16D1+ and how stable is it over temperature?

The MAX6383LT16D1+ has a factory-set reset threshold of 1.58V, specified with ±2.5% accuracy over the full operating temperature range of −40°C to +125°C. This stability is achieved via laser-trimmed bandgap references and low-tempco design, ensuring consistent brownout detection without external calibration. The MAX6383LT16D1+ maintains this tolerance across all production units, eliminating batch-to-batch variation in critical power-monitoring applications.

Does MAX6383LT16D1+ support manual reset functionality?

No, the MAX6383LT16D1+ does not include a manual reset (MR) input. It is a dedicated single-supply supervisor with only VCC, GND, and open-drain RESET terminals. Manual reset capability is present only in MAX6384–MAX6386 and MAX6390 variants. For designs requiring operator-initiated reset, MAX6384LT16D1+ or MAX6390LT16D4+ would be appropriate alternatives - the MAX6383LT16D1+ is optimized for minimal pin count and footprint.

What package options are available for MAX6383LT16D1+ and are they pin-compatible?

The MAX6383LT16D1+ is offered in two RoHS-compliant packages: 3-pin SC70 (outline X3+2) and 6-pin μDFN (outline L611+1). These packages are **not** pin-compatible - the SC70-3 uses pins 1–3 for RESET/VCC/GND, while the μDFN-6 places RESET on pin 1, VCC on pin 4, and GND on pin 6, with pins 2, 3, and 5 designated as no-connect. Board layout must match the selected package; migration requires PCB revision.

Can MAX6383LT16D1+ monitor a second voltage rail like VIO or VCORE?

No, the MAX6383LT16D1+ monitors only the VCC supply rail. Auxiliary voltage monitoring via RESET IN is implemented exclusively in MAX6387–MAX6389 variants, which feature a dedicated high-impedance input compared to an internal 1.27V reference. The MAX6383LT16D1+ lacks both the RESET IN pin and associated comparator circuitry - it is a single-rail supervisor designed for simplicity and minimal quiescent current.

What is the maximum sink current capability of the open-drain RESET output on MAX6383LT16D1+?

The open-drain RESET output of MAX6383LT16D1+ can sink up to 3.2mA when VCC ≥ 4.5V, 1.2mA when VCC ≥ 2.5V, and 80µA when VCC ≥ 1.0V, with VOL ≤ 0.4V, ≤ 0.3V, and ≤ 0.3V respectively. This allows direct interfacing with common logic families (e.g., 3.3V or 5V CMOS) using appropriately sized external pullup resistors - the MAX6383LT16D1+ itself does not source current on RESET.